These charts are from the HuffPost / YouGov Poll done after each of the two Democratic debates. There was a big winner each night -- Elizabeth Warren on Wednesday and Kamala Harris on Thursday. Both significantly improved the opinion voters had of them -- and more important (since beating Trump is the prime issue), both increased voter perceptions of their electability. The two other leaders (Joe Biden and Bernie Sanders) were not helped by the debates.
The poll surveyed 1,000 Democratic voters after the two debates.
